Perforator for printing-presses



(No Model.)

l y J. J. CLAUSE.

PERFORATOR POB PRINTINGv PRESSES.

V N, mils. Phan-MW, www. RC.

"UNITED STATES JOHN vJ. CLAUSE, OF

PATENT y OFFICE.

CHICAGO, ILLINOIS.

PERFORATOR FOKR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 244,979, dated August 2, 1881. Application led January 14, 1881. (No model.)

To all whom it may concern:

Be it known that I, JOHN J. CLAUSE, of Chicago, in the county of Cook and State of Illinois, have invented certain Improvements in Pert'orators for Printing-Presses,'ot` which the following is a specification.

My invention relates to devices for adjusting the knives of the perforatin g-cylinders ot' printing-presses to adapt them to different thicknesses of paper. In the devices now used for this `purpose the knife is sometimes required to be entirely removed from the cylinder, and in all the constructions now known to me a considerable time is required to make any change whatever in the adjustment. 1

i This invention is designed to simplify and quicken the operation ofpadjustment.l Time saved in this way is of great importance7 because newspaper-presses which are required to print entire editions in a few hours, and must therefore work with extreme rapidity, are often supplied with paper which may vary in thickness in different portions of its length to such a degree as to necessitate change in the adjustment of the perforator.

The invention consists in supporting the perforator upon wedges resting one above the other upon a frame or other drm support in the inf terior of the cylinder, and with their thick and thin ends together, both being tapered at the same angle, whereby by movin g one or both the Wedgeslengthwise theknii'eis pushed out from. or allowed to sink into the cylinder without change in its horizontality. This method of adjustment, as will be readily seen, can belvery quickly made, and admits of great nicety in the change, because the Wedges can be given a very slight amount of taper, and also can be moved a very slight distance.

The details of the invention will be more fully understood by reference to the accompanying drawings, wherein- Figure 1 is a longitudinal section of a perforating-cylinder and of my adjusting devices, and Fig. 2 is a cross-section oi' the same. y

In said drawings, N represents the cylinder, provided with a removable section, a, to permit the insertion of the knife and its supports.

In the cylinder below the section a. is a iirm frame or boxing, e, extending from end to end of the cylinder. Upon the bottom of this frame rest two long wedges, d d', having the same taper, and vplaced one above the other, with the thick and thin of one above the thin and thick of the other, and one is provided with a set-screw, H, passing through the head of the cylinder or the end of the framee, whereby it may be moved end wise in either direction. The otherl wedge may also be provided with a setscrew similar to the one H, if desired. Astride of these wedges, and resting upon them, is the knife y and its frame x, which latter may be shaped like an inverted U, and I prefer this construction, which is the one illustrated, as the limbs ofthe U may be made to inclose the sides of the vwedges and keep them perpendicular with each other, and also because the set-screws c, which are tightened when the perforator has been adjustedand are designed to secure it against slipping outward, can then conveniently be made to impi-nge upon said side limbs,

It will be readily seen from the construction described that by moving either of the wedges lengthwise the perforator and its frame will be-lifted away from or lowered toward the center of the cylinder, according to the direction in which the wedge is moved, and that both Aends of the knife will be moved equally in the operation.

Theupper wedge may be secured to the bladeframe or formed on it, or the lower one to or onthe bed-frame, so that but one of them will be movable lengthwise without changing the result.

I claimF l. The combination7 with the cylinder, of the adjustable perforating-blade and the described means for adjusting the same, consisting of the long wedges d d and the supporting bed-frame within the cylinder, substantially as specified.

2. The blade and its inverted-U frame, in combination with the wedges lying between the limbs of Vsaid frame, substantially as specified.

JOHN J. CLAUSE. 

